Failed To Execute Script Mspm-source Jun 2026

Below is a structured guide to troubleshooting this error, formatted as a blog post for easy reference.

If the error appears on startup and you don't know which app is causing it: : failed to execute script mspm-source

This is the most common cause. You may have uninstalled McAfee or another antivirus tool, but the uninstaller failed to remove all traces. A leftover registry key or a shortcut in the Windows Startup folder still points to mspm-source . Below is a structured guide to troubleshooting this

: Files required for the script to run may be missing or damaged. Security Blocking : Antivirus or Windows Script Host settings might be preventing the script from executing. Missing Runtime Environment A leftover registry key or a shortcut in

Even if the script is missing, the installer that put it there might still be active in your system's temporary folders.

If you are the developer who packaged mspm-source :